Breitling Classic Avi Chronograph 42 R233801A1B1R1 Automatic 42mm Men's WatchProduct Overview From its brave first flight to the birth of commercial aviation, Breitling's history is inextricably linked to the history of aircraft. In the 1930s, Breitling's U Boat Aviation division made a name for itself by inventing precise cockpit clocks. Two decades later, it introduced even more innovative flight instruments to the market in the form of the Ref. 765 AVI. This watch, a pioneer of pilot watches, serves as the technical